// TODO: Try to combine the 2 layoutParm functions.
int32_t
TR::AMD64SystemLinkage::layoutParm(
TR::ParameterSymbol *parmSymbol,
int32_t &dataCursor,
uint16_t &intReg,
uint16_t &floatReg,
TR::parmLayoutResult &layoutResult)
{
//AMD64 SysV ABI: if the size of an object is larger than four eightbytes, or it contains unaligned fields, it has class MEMORY.
if (parmSymbol->getSize() > 4*AMD64_STACK_SLOT_SIZE) goto LAYOUT_ON_STACK;
if (layoutTypeInRegs(parmSymbol->getDataType(), intReg, floatReg, layoutResult))
{
layoutResult.abstract |= TR::parmLayoutResult::IN_LINKAGE_REG;
if (parmSymbol->getSize() > GPR_REG_WIDTH)
layoutResult.abstract |= TR::parmLayoutResult::IN_LINKAGE_REG_PAIR;
if (comp()->getOption(TR_TraceCG))
traceMsg(comp(), "layout param symbol %p in register\n", parmSymbol);
if (!getProperties().getCallerFrameAllocatesSpaceForLinkageRegisters())
return 0;
}
LAYOUT_ON_STACK:
layoutResult.abstract |= TR::parmLayoutResult::ON_STACK;
int32_t align = layoutTypeOnStack(parmSymbol->getDataType(), dataCursor, layoutResult);
if (comp()->getOption(TR_TraceCG))
traceMsg(comp(), "layout param symbol %p on stack\n", parmSymbol);
return align;
}
int32_t
TR::IA32SystemLinkage::layoutParm(TR::ParameterSymbol *parmSymbol, int32_t &dataCursor, uint16_t &intReg, uint16_t &floatReg, TR::parmLayoutResult &layoutResult)
{
layoutResult.abstract |= TR::parmLayoutResult::ON_STACK;
int32_t align = layoutTypeOnStack(parmSymbol->getDataType(), dataCursor, layoutResult);
if (comp()->getOption(TR_TraceCG))
traceMsg(comp(), "layout param symbol %p on stack\n", parmSymbol);
return align;
}
